Signs Tagged With Time Zone Boundary

Entering Mountain Time Zone on MTS-233 south. Taken south of the US/Canada boundary.

Entering Hughes County/Central Time Zone on US-14/SD-34 East/US-83 North. The county/time zone boundary is on the Missouri River bridge.

Welcome To Nevada / Pacific Time Zone on NV-487 North.

Entering Pacific Time Zone on I-80 West/Alt. US-93 North. The city of West Wendover, Nevada observes Mountain Time as it is located on the Utah border. The time zone boundary on I-80 is just west of West Wendover.

First distance marker on I-11 north in Nevada. Distance to Henderson and Las Vegas. Entering Pacific Time Zone.

Entering Mountain Time Zone on NV-225 north, approaching the Idaho state line. The official time zone boundary is the Nevada-Idaho state line, but the towns of Owyhee and Mountain City, NV both observe Mountain Time.

Entering Pacific Time Zone at the Nevada-Utah state line on US-6/US-50 west.

Entering Malheur County / Mountain Time Zone on US-26 east. Most of Oregon is in Pacific Time, except for the northern half of Malheur County and some communities in Hells Canyon.

Entering Malheur County and Mountain Time Zone on US-20 East. The northern portion of Malheur County is the only area in Oregon that follows Mountain Time. From my travels in Oregon, this is the only blue time zone sign in the state. The rest are the standard green color.

Entering Mountain Time Zone on NV-225 north, approaching the Idaho state line. The official time zone boundary is the Nevada-Idaho state line, but the towns of Owyhee and Mountain City, NV both observe Mountain Time.

Central Time Zone on US-87 south. Taken at the New Mexico - Texas state line.

Entering Hudspeth County and Mountain Time Zone on I-10 west.

Entering Mountain Time Zone on RM-652 west.

Entering Mountain Time Zone on OR-78 east.

Entering Mountain Time Zone and Jackpot on US-93 north. Most of Nevada is on Pacific Time, except for a few of the border towns, bordering states in Mountain Time. Jackpot is on the border with Idaho.

Entering Pacific Time on I-40 west. Arizona does not observe daylight savings time, so during the summer months Arizona and California are on the same time.

Entering Mountain Time Zone on I-80 east, just before the Nevada-Utah state line.

Entering Pacific Time on US-93 south. Almost all of Nevada is on Pacific Time, except for a few of the border towns, Jackpot included.

Entering Mountain Time Zone on US-95 north. US-95 passes in and out of Mountain Time for its duration. The highway enters Pacific Time again just north of Riggins, Idaho.

Welcome to California on I-10 West/US-95 north, just west of the California State Agricultural Inspection Station. Entering Pacific Time Zone.

I-84 East - Entering Mountain Time.

Welcome to Idaho on US-12 west at Lolo Pass. Entering Pacific Time Zone.

Entering Pacific Time Zone on OR-86 west.

Mountain Time - Set Your Watch Ahead One Hour, on US-30 east.

Welcome To Idaho on I-90 west at Idaho-Montana border on Lookout Pass. This type of sign first appeared in 2006.